S
M
T
W
T
F
S
26
79°
61°
27
79°
61°
28
78°
60°
29
77°
59°
30
76°
57°
31
69°
53°
1
68°
52°
2
69°
51°
3
69°
53°
4
71°
58°
5
72°
58°
6
74°
59°
7
71°
58°
8
72°
56°
9
71°
54°
10
70°
50°
11
69°
49°
12
73°
59°
13
74°
60°
14
78°
58°
15
77°
56°
16
72°
59°
17
77°
57°
18
74°
55°
19
71°
49°
20
67°
47°
21
67°
47°
22
68°
48°
23
70°
48°
24
72°
49°
25
74°
48°
26
74°
52°
27
75°
55°
28
75°
53°
29
73°
53°
30
74°
54°
31
74°
49°
1
73°
45°
2
66°
44°
3
65°
48°
4
70°
53°
5
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cowansville
Cowansville's August 2026 forecast shows daily high temperatures ranging from 65° to 79°, with overnight lows between 44° and 61°. The average high for August is 72° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Cowansville. See also: September | October | November.